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Microsoft Silverlight PivotViewer is a web service architecture that provides fluid access to massive image databases using digital zoom image technology. The Pivot interface models some aspects of human vision, with the ability both to perform a global scan and to rapidly focus on the finest details. The inclusion of many levels of metadata in an XML file makes it possible for clients to rapidly...
Analyzing high-resolution images of astrocytes is important in understanding the diseases, such as glaucoma and retinal detachment, to which astrocytes are known to become reactive. This is challenging because the cells are small, homogeneous, and closely packed. We propose an interactive visualization system designed for such images. Our system employs a probabilistic segmentation algorithm to help...
Automated high-throughput analysis of single-cell timecourse data presents a major bottleneck in live cell imaging. We present LineageTracker, an ImageJ framework to track expression of fluorescent gene reporters over multiple cell divisions. It is able to perform automatic segmentation and tracking, and allows viewing and editing of tracks. The main feature of the tracking algorithm is a statistical...
In this paper a minimum deviation of fidelity based data embedding technique (STMDF) has been proposed where two bits per byte have been replaced by choosing the position randomly between LSB and up to fourth bit towards MSB. This technique also optimized the intensity value of pixel after embedding by comparing it with original pixel value. STMDF technique has been compared with existing Wu-Tsai's...
In this paper, an Image Fusion Tool for satellite images is proposed. It is mainly developed to enhance quality of images taken from DubaiSat-1 remote sensing satellite. Two different methods were proposed, one is called Pixel-intensity Fusion (PIF) and the other is Transferred color space Fusion (TCSF). Each technique is presented with two options. Each method is also consisting two approaches. Results...
This paper presents a hardware design for the H.264/AVC Eighth-Pixel Chrominance Interpolation Unit that is a part of the Motion Compensation Unit. The architecture was optimized to reach a high throughput through a balanced pipeline and internal parallelism exploration. The design was described in VHDL and synthesized to a Xilinx Virtex2p FPGA. The best performance results achieve an operation frequency...
Recently, the demands to achieve both high-speed and high-quality imaging including high A/D resolution have increased. The new target specification is 60fps Ultra-High-Definition with 12b resolution. This imaging requires 24Gb/s, while reported CMOS image sensors have reached up to 6.5Gb/s. This paper presents a 34.8Gb/s CMOS image sensor with high image quality, which realizes 17.7M pixels at 120fps...
In this paper, we present an array of 160x128 pixels capable of detecting the ToA of single photons, implemented in 0.13μm CMOS technology. The sensor is partitioned into 4 identical quadrants that are served by a balanced clock tree so as to minimize skews and to ensure the fastest possible readout process. The pixels in the rows are read out in rolling shutter mode in two directions (top and bottom)...
Once the gray level quantization is applied to the image, analog value of the pixel can not be recovered in general. OK-quantization theory (OKQT) proposed a theoretical basis for the quantization from a view point of the restoration from digital to analog expressions of the probabilistic distribution function of the gray value. Theoretically guided by OKQT, a couple of methods for the super resolution...
Low-noise CMOS image sensors (CIS) employing column-parallel amplifiers that significantly reduce temporal noise, as well as electron-multiplication CCD (EM-CCD) image sensors are becoming popular for very-low-light-level imaging. This paper presents a column-parallel ADC for CMOS imagers using a successive operation of folding-integration ADC (FI-ADC) and cyclic ADC for attaining very low noise,...
Identity of a motor vehicle is usually through its license plate. Automatic vehicle license plate recognition has several applications in intelligent traffic management systems. In this paper, we propose and describe a fast edge assisted adaptive binarization technique for improved extraction of text from license plate images captured using mobile phone camera. We evaluate and compare the performance...
In this paper we propose a low-complexity image stitching algorithm. By using the developed algorithm, users can automatically merge images into a panoramic image, even these source images have rotation and zooming actions. We adopt feature-base estimation to get the relation between images and employ down-sampling to reduce computing complexity. We also apply a copy-paste and texture-base scheme...
This paper introduces a system that automatically classifies image pairs based on the type of registration required to align them. The system uses support vector machines to classify between panoramas, high-dynamic-range images, focal stacks, super-resolution, and unrelated image pairs. A feature vector was developed to describe the images, and 1100 pairs were used to train and test the system with...
Using a set of low resolution images with sub-pixel shifts to reconstruct a high resolution less aliased image requires both interleaving of the image samples at the effectively higher sampling rate and deconvolution of the blur introduced by pixel sensor averaging. When measurement noise is low and knowledge of sub-pixel shift values is accurate, resolution improvement is limited primarily by the...
We report on the implementation of a color-capable sub-pixel resolving optofluidic microscope based on the pixel super-resolution algorithm and sequential RGB illumination, for low-cost on-chip color imaging of biological samples with sub-cellular resolution.
We demonstrate an optofluidic microscopy scheme which can acquire stereo images, utilizing different angles of illumination for projection imaging with our sub-pixel resolving optofluidic microscope.
The availability of inexpensive cameras enables alternative applications beyond personal video communication. For example, surveillance of rooms and home premises is such an alternative application, which can be extended with remote viewing on hand-held battery-powered consumer devices. Scalable wavelet image/video coding is attractive for this application since the video can be scaled easily to many...
To solve the problem of precise edge localization and measurement on low-resolution images, statistics characters of edge gradient magnitude of both high and low resolution images along the gradient direction are extracted and analyzed. The gradient magnitude statistics is described with General Gaussian Distribution (GGD). The relationship between statistics of high and low resolution images is established...
We present an algorithm to estimate 3D depth from a single monocular outdoor image based on the multiresolution analysis of the various cues including edge, hue, saturation, vertical depth prior, and dark channel prior. Our experimental results show a huge amount of computational savings over literature work while keeping our depth map close to the ground truth.
Images of folding process was collected and on-line detection of folding dislocations is explored using characteristic points in these images, which reduces the computation time. First, determine the dislocation type through characteristic points in the images of a folding process. Then, through calibration the corresponding dislocation bias for the detected type of folding dislocation can be obtained...
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